121527229 has 2 divisors, whose sum is σ = 121527230. Its totient is φ = 121527228.

The previous prime is 121527227. The next prime is 121527233. The reversal of 121527229 is 922725121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81812025 + 39715204 = 9045^2 + 6302^2 .

It is a cyclic number.

It is not a de Polignac number, because 121527229 - 2¹ = 121527227 is a prime.

Together with 121527227, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121527229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121527227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60763614 + 60763615.

It is an arithmetic number, because the mean of its divisors is an integer number (60763615).

Almost surely, 2^121527229 is an apocalyptic number.

It is an amenable number.

121527229 is a deficient number, since it is larger than the sum of its proper divisors (1).

121527229 is an equidigital number, since it uses as much as digits as its factorization.

121527229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 121527229 is about 11023.9389058539. The cubic root of 121527229 is about 495.3260838204.

The spelling of 121527229 in words is "one hundred twenty-one million, five hundred twenty-seven thousand, two hundred twenty-nine".